ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Wed Jul 23 01:57:54 2025 +0200| [fa197924a66d83106c5d4dadb8610a1c526afd67] | committer: Michael Niedermayer
avformat/asfdec_f: Check amount of value read Fixes: use of uninitialized memory Fixes: 403675492/clusterfuzz-testcase-minimized-ffmpeg_dem_ASF_fuzzer-4754281823797248 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=fa197924a66d83106c5d4dadb8610a1c526afd67 --- libavformat/asfdec_f.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/libavformat/asfdec_f.c b/libavformat/asfdec_f.c index ea6e8ef4f3..c9010179b8 100644 --- a/libavformat/asfdec_f.c +++ b/libavformat/asfdec_f.c @@ -240,8 +240,10 @@ static void get_tag(AVFormatContext *s, const char *key, int type, int len, int case ASF_UNICODE: avio_get_str16le(s->pb, len, value, 2 * len + 1); break; - case -1: // ASCI - avio_read(s->pb, value, len); + case -1:; // ASCII + int ret = ffio_read_size(s->pb, value, len); + if (ret < 0) + goto finish; value[len]=0; break; case ASF_BYTE_ARRAY: _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
